Novak Djokovic was treated on the court for an apparent shoulder injury during Friday's match, putting Wimbledon's top seed in jeopardy.

Video of the incident showed Djokovic fell on his right shoulder while attempting to reach a deep shot in his match against Gilles Simon of France. As he fell in apparent great pain, he reached for his left shoulder.

Up two sets and leading 3-2 in the third set, Djokovic got up holding his left arm crooked across is body, with his right hand holding the injured joint. He walked to the sideline, where a trainer attended him for several minutes. Coach Boris Becker and Djokovic supports watched with apparent concern from the stands.

UPDATE: Djokovic described the injury after the match, noting he will face Jo-Wilfried Tsonga, another Frenchman, in his next match.

"It was a sharp pain when I fell — an awkward fall — I was just hoping there was nothing going on bad with the joint but no damage," he said. "I played a few games after that. The muscle is sore but all in all I am just glad to get through.

"I now have two days off and I am going to try and get ready for Tsonga ... at the important moments I played well. I dropped a couple of service games, and was up and down throughout the match. It could have gone either way in the third, but at the important moments I came up with the right selection of shots."